Mabye it was deleted by one of them?
I found this but I don't think it will help.

ok does the link on your homepage work? if so just open it and resave. did you ever favorite it? if so then you can easily open it and resave. you could reach out to the community and ask if anybody favorited it....then you could recover it that way. also tell maplecrest to get that ridiculous bring back firefox save into his trash can... we can feel sorry for you on the forums. please dont quit dude... then we will have to listen to your followers complain for the next month

Edit: dude what the hell, your quiting because your cousin accidentally deleted your save? That's pretty stupid to say, considering (sorry for the language) "shit happens". You just have to take it and keep going, we will all still love you as a great player, no matter what happened to your saves. All it really is, are just a bunch of 0's and 1's that make the game of TPT work, no point in sweating over it! Your still a great player, please don't quit. It's just a little mistake, nothing to make people sad over it.